Input/Output Device

Abstract: An input/output device connected to a control device that controls a rotating machine provided in an electric power steering device. The input/output device comprises a target characteristic input unit that acquires a target characteristic of feedback control performed by the control device, a control constant calculation unit that calculates a control constant of the control device on the basis of the target characteristic, an evaluation result output unit that outputs an evaluation result of a feedback control system to which the control constant is applied, a communication transmission unit that transmits the control constant to the control device, and a write instruction unit that instructs the communication transmission unit to transmit the control constant.

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